Unable to Select the Size

Question

Unable to select the size of the Disk in the Virtual Machine. Screenshots attached for your reference.

Answer 1

Here these all are the disk size which will charge you and as your free trial, you can select only certain resources so kindly remove the filters and check the size of the disk that is available and use it. If you want to select a particular disk size then you need to upgrade your free trial to pay as you go it will charge you from the free credits. This will help you to select the disk size.

For more information, check out this Azure Developer Tutorial.